Instead of making 8 large cookies, you can make 16 smaller ones. Make a well in the center of the small cookies using a 1-teaspoon measuring spoon and bake for 7 minutes.
Pull the cookies out of the oven and make an indentation in the center with a 1 tablespoon measuring spoon and place back in the oven for another 2 minutes for a total bake time of 9 minutes. Pull out the cookies, let them cool down then fill them with the lime pie filling.